Home: 14 years and 3 garbage disposals?

I did google and it said a disposal should last 10+ years. Mine do not. Bought this house in 1999. Have replaced disposals 2 times. Getting ready to replace another one. On average they are lasting me 6 years.

I had one handyman come repair this current one, but since he put CLR down it, it stinks all the time, and that was a year or so ago. Now it is leaking, or I should say again, it stopped leaking for a long time, now is starting up again. Don’t know why.

Is this normal? I am a single person so I don’t generate a ton of garbage, maybe I put down the wrong stuff (no potato peals, but did try the lemon trick for the smell-didn’t work).